Buffing machine



June s 1926. 1,587,654

I F. J. KERNER BUFFING MACHINE Filed April 4, 1924 2 SheetsSheet 1 June 8 ,'1926.

1,587,654 F. J. KERNER BUFFING MACHINE Filed pril 4 1924 2 Sheets-Sheet 2 W MWI QA-n lli Patented June 8, 1926.

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FRANK J. KERNER, OF MINNEAPOLIS, MENNESOTA.

BUFFING MACHINE.

Application filed April 4,

My invention has for its object to provide an extremely simple and highly e-tlicient butting machine having for its primary use the removal of rubber cement from the plies of canvas or other material making up the carcass of torn down pneumatic tire casings; and which plies, after the rubber cement has been removed, are used in making tire patches and tire reinforcements.

To the above end, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a front elevation of the butting machine, with some parts broken away and some parts sectioned;

Fig. 2 is a View principally in section taken on the line 2-2 of Fig. 1; and

Fig. 3 is a fragn'ientary view in side elevation.

The numeral 1 indicates a pair of A- shaped end frames rigidly connected near their upper extremities by a bed plate 5. These end frames may be bolted or otlierwise secured to the floor. A wide builing wheel 6 is mounted on a shaft 7 journaled in bearings 8 on the tops of the end frames 1-. This butting wheel 6 comprises a multiplicity of abrasive rings 9, of wire or other suitable material, mounted on a core or drum 10 which, in turn, is mounted on the shaft 7. These rings 9 clamped together by a pair of collars 11 one of which is fixed in respect to the drum 10 and the other of which has screw-threaded engagement with the reduced end on said drum for axial adjustment toward and from the other of said collars. The butting wheel 6 is driven at the desired speed by a pulley 12 on the shaft 7 and over which pulley runs a driving belt, not shown.

Extending under the batting wheel 6 is a horizontally disposed table 18 arranged for cooperation with said bufling wheel. This table 13 is hinged at its receiving end for su' ging movement radially toward and from the butting wheel 6. As one means of hingedly supporting the table 13 there is provided, as shown, a pair of screw-threaded posts 14, the upper ends of which are hinged at 15 to depending lugs 16 on the under 19%. Serial no. 704,138.

side of said table. Opposing nuts 17 have threaded engagement ith the posts 14 and engage the upper and lower faces of the bed plate 5 to rigidly but adjustably secure said posts thereto. Gbviously, by adjusting the nuts 17 on the posts 14, the receiving endof the table 13 may be raised or lowered, at will.

To further support the table 13 and hold the same against movement on its hinges 15 and in different radial adjustments in respect to the bufiing wheel 6, there is provided, as shown, a depending screw-threaded post 18, the upper edge of which is hinged at 19 to the lugs 20 on the under side of said table. 'lhis post 18 works through an aperture in the bed plate 5 and has applied thereto a nut-acting bevel gear 21 which loosely rests on said bed plate as a base of resistance. '10 hold the gear 21 on the bed plate 5 and at the same time permit axial adjustment of the post 18, there is provided a coil spring 22 encircling said post and compressed between the bed plate 5 and a washer on said post and held in differenta-Xial adjustments thereon to vary the position of the spring 22 by a pair of nuts 24., one of which affords a lock nut.

To rotate the nut-acting bevel gear 21 and thereby adjust the tahe 13 toward and from the buffing wheel 6, to vary the distance therebetween, there is provided a horizontal shaft 25 journaled in bearings 26 on the right-hand end-frame t and bed plate 5, and has on its inner end a bevel gear 27 that meshes with the bevel gear 21. ()n the outer end of the shaft 25 is a hand wheel 28 by which said shaft may be rotated in either direction.

At the receiving end of the table 13 are co-operating upper and lower feed rolls 29 and 30, respectively, the opposing faces of which are substantially in the same plane as the upper surface of said table 13. These feed rolls 29 and 30 extend parallel to and the full width of the buffing wheel 6. The feed roll 30 is journaled in a pair of forwardly projecting arms 31 rigidly secured to the table 13, and the feed roll 29 is journaled in a pair of forwardly projecting arms 32 hinged at 33 to the top of the table 13 for vertical swinging movement over the arms 31. The arms 31 and 32 on each side oi the machine are connected by a coiled spring 34 under strain to yieldingly hold the feed roll 29 in contact with the feed roll 30.

Preferably, as shown, the peripheries of the feed rolls 29 and 30 are knurled to increase the feeding action thereof. The right-hand end of the shaft for the feed roll 30 is extended outward of the machine and provided with a hand crank which swings clear of the hand wheel 28, and by which hand crank the lower feed roll 30 may be rotated, at will. The upper feed roll 29 is forwardly rotated from the lower feed roll 30 by pairs of intermeshing gears 36 at the ends of said feed rolls.

A dust hood 37 having closed ends is provided for the butiii'ig wheel 6 and extends downward at its front wall to a point in front of the upper feed roll 29 and its rear wall is extended obliquely downward below the table 13, as best shown in Fig. 2.

To remove the rubber cement from both faces of the plies of torn down pneumatic tire casings, the same are inserted between the feed rolls 29 and SO and moved thereby over the face of the table 13 where they are acted on by the butiing wheel 6 which very quickly and thoroughly removes all of the rubber cement on the respective face of the ply. After the rubber cement las been removed from one side of the ply, the other side is turned up and again fed to the butting wheel to remove the rubber cement therefrom. lVhile the butting wheel 6 is constantly driven by power, the feed rolls are operated by the hand crank to feed the plies to the buffing wheel at the desired speed.

The above described buiiing machine has, in actual usage, proven highly efficient for the purpose had in view.

What I claim is:

1. The combination with a butting wheel, of a table under the buffing wheel, feed rolls mounted on the table at its receiving end, and means for adjusting the table toward and from the butting wheel.

2. The combination with a buffing wheel, of a table under the butting wheel, feed rolls at the receiving end of the table, said table being hinged at its receiving end, and an adjustable support for adjusting the table toward and from the bu'iiing wheel.

3. The structure defined in claim 2 in which said support is substantially below the axis of the buffing wheel. 7

4. The structure defined in claim 2 in which the hinged receiving end of the table is vertically adjustable.

5. The combination with a buffing wheel, of a table under the buffing wheel, feed rolls at the receiving end of the table, said table being hinged at its receiving end, and means for adjusting the table toward and from the butting wheel, said means including a screwtln'eaded post having a supported adjusting nut.

6. The combination with a butting wheel, of a table under the butting wheel, feed rolls at the receiving end of the table, said table being hinged at its receiving end, and means for adjusting the table toward and from the butting wheel, said means including a depending screw-threaded post pivoted to the table, a support, an ad usting nut having threaded engagement with the post and engaging said support as a base of resistance, and a spring operative on the post to hold the nut on the support and permit adjustment of the post by said nut.

7. The coi'nbinat-ion with a buffing wheel, of a table under the buffing wheel, feed rolls at the receiving end of the table, said table being hinged at its receiving end, and means for adjusting the table toward and from the buffing wheel, said means including a depending screw-threaded post pivoted to the table, an axially held gear having threaded engagement with the post, and means including a gear for rotating the gear on the post.

8. The combination with a buffing wheel, of a table under the butling wheel, feed rolls at the receiving end of the table, a support, a pair of vertically adjustable posts on the support to which the table is hinged at its receiving end, a depending screw-threaded post pivoted to the table, an axially held gear on the support and having threaded engagement with said post, and means for rotating the gear for adjusting the table in respect to the buffing wheel.

In testimony whereof I atiix my signature.

FRANK J. KERNER. 

